Figure 1.

Silk dispersion and silk-CNT scaffolding. (a) The MWCNT dispersions in DI water (left) and silk fibroin solution (right). MWCNTs form a homogeneous and stable solution without sedimentation in silk fibroin solutions (right); on the contrary, they aggregate into large clusters in water (left). (b) Silk fibroin provides stable matrices to hold the CNTs in aqueous environments. (c) MWCNTs form large aggregates in aqueous solution (stem cell culture media).